| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
2.2%
|
| 2 | 15 |
6.6%
|
|
| 3 | 9 |
3.9%
|
|
| 4 | 13 |
5.7%
|
|
| 5 | 9 |
3.9%
|
|
| 6 | 13 |
5.7%
|
|
| 7 | 14 |
6.1%
|
|
| 8 | 21 |
9.2%
|
|
| 9 | 10 |
4.4%
|
|
| 10 | Very effective | 20 |
8.7%
|
| 11 | Don't know | 100 |
43.7%
|
| Sysmiss | 8 |